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Concave Function
Definition
A function f(x) is said to be concave on an interval [a, b] if, for any points x_1 and x_2 in [a, b], the function -f(x) is convex on that interval.
Related term
A function f(x) is said to be concave on an interval [a, b] if, for any points x_1 and x_2 in [a, b], the function -f(x) is convex on that interval.